An automobile seat having a seat cushion, a seatback, and a headrest is disclosed. The headrest includes a stay and a headrest main body. The stay is generally U-shaped and is detachably coupled to the seatback. The stay includes a generally horizontal portion having an axis. The headrest main body is rotatably coupled to the horizontal portion of the stay and includes a receiving port for receiving the horizontal portion of the stay. The headrest main body rotates around the axis of the horizontal portion of the stay. The receiving port is located at a position that is coaxial with the axis of the horizontal portion of the stay.